<template>
  <div>
    <nav-bar>
      <div slot="left" class="back" @click="backClick">
        <img src="~assets/img/common/back.svg" alt="">
      </div>
      <div slot="center" class="title">
        <div v-for="(item,index) in titles"
             class="title-item"
             :class="{active:index === currentIndex}"
              @click="titleClick(index)"
        >{{item}}</div>
      </div>
    </nav-bar>
  </div>
</template>

<script>
  import NavBar from "../../../components/common/navbar/NavBar";

  export default {
    name: "DetailNavBar",
    components: {
      NavBar
    },
    data(){
      return {
        titles:['商品','参数','评论','推荐'],
        currentIndex: 0
      }
    },
    methods: {
      titleClick(index) {
        this.currentIndex = index
        this.$emit('titleClick',index)
      },
      backClick() {
        this.$router.back()
      }
    }
  }
</script>

<style scoped>

  .title {
    display: flex;
    font-size: 13px;
  }
  .title-item{
    flex:1;
  }
  .active{
    color: var(--color-tint);
  }

  .back img{
    padding-top: 12px;
  }

</style>
